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Finding the Fourth Proportional to 368,741.76, 553,170.96 and 132,079.20

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Solution

The fourth proportional to 368,741.76, 553,170.96 and 132,079.20 is: 198,139.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,741.76 : 553,170.96 = 132,079.20 : x
  2. Step 2: Convert to fraction form
    368,741.76/553,170.96 = 132,079.20/x
  3. Step 3: Cross multiply
    368,741.76x = 553,170.96 × 132,079.20
  4. Step 4: Simplify right side
    368,741.76x = 73,062,377,860.03
  5. Step 5: Solve for x
    x = 73,062,377,860.03/368,741.76
  6. Step 6: Final answer
    x = 198,139.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.